Sahih Bukhari | Volume 7 | Hadith Number 709

The Prophet had forbidden: (A) the Mulamasa and Munabadha (bargains), (B) the offering of two prayers, one after the morning compulsory prayer till the sun rises, and the others, after the 'Asr prayer till the sun sets (C) He also forbade that one should sit wearing one garment, nothing of which covers his private parts (D) and prevent them from exposure to the sky; (E) he also forbade Ishtimal-as-Samma'.